Abstract
An Fe-containing hexagonal mesoporous silica molecular sieve material was synthesized at room temperature for the first time. X-ray powder diffraction, infrared spectroscopy, electron spin resonance (ESR) and Mossbauer spectroscopy confirm the incorporation of Fe(III) in the structural framework. The tetrahedrally coordinated Fe(III) in this material is thermally more stable compared to that in another kind of hexagonal mesoporous molecular sieve containing Fe. It also exhibits better hydrothermal stability than Fe-free and Al-containing hexagonal molecular sieves.
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